How to repair a PDF file using various professional methods

The PDF format is the most popular format for documents because it is supported by all operating systems and widely used around the world. It is also the most secure, as it is difficult to change or modify PDF documents except in certain special cases and with complex methods. PDF files can also be protected with a password and watermarks. However, sometimes PDF files become corrupted, and when you try to open a document with Adobe Acrobat / Adobe Reader, you may encounter multiple error messages. Let us explain many solutions to repair corrupted PDF files.

If you encounter any of the following problems, all you have to do is follow this topic:

• PDF File not readable with your software
• Root object is invalid or missing
• File is damaged or corrupt
• There was an error opening this document
• There was an error processing this page
• It contains info not understood by the viewer
• Format error- Not a PDF File or Corrupted

In most cases, these errors may be due to software issues (including web browsers, email programs, operating systems, antivirus programs, or firewalls).

You can perform the following simple steps to solve the problem:

• Download the document again from the original source.
• Restore a copy of the document from a backup.
• Restore a previous version of the document.

If you are unable to recover the document using these methods, you should contact Adobe for more information or read the following topics from Adobe and follow their recommendations in case of a corrupted PDF file:

Since Adobe does not provide specific advice for these cases, you may need to try to find answers on their forum, where members have suggested many solutions, and perhaps the following are the most successful solutions:

• Download the PDF file again.
• Recreate the PDF document.
• Install the latest version of Adobe Acrobat/Adobe Reader.
• Ensure that you created the document correctly if it was created in InDesign or Illustrator (InDesign or Illustrator for Mac OS).
• Use external services to repair PDF files.
• Use external tools to repair PDF documents.
• Manually extract text from a PDF file.
• Restore a PDF file using special software.
• Restore a PDF file using online services.

Ways to repair corrupt PDF files:

Manually extract text from a PDF file

You can recover text (text only, not graphical information or tables) from a corrupted PDF file. To do this, open the PDF file in any text editor (right-click on the PDF file and select “Open with” | “Notepad”, for example). You will see a mixture of PostScript code, text, and sets of unreadable characters. Then, you need to select the text blocks in the file and copy them into a new document. This process will take a long time and be tedious.

PDF Repair Toolbox software to repair PDF files

The PDF Repair Toolbox software only works on Windows operating systems and the software license starts at $27. There are no restrictions on the number and size of files you can repair, and you can try the free version of the software, which allows you to save a few pages of the file to familiarize yourself with the software’s great ability to repair files.

When starting PDF Repair Toolbox, you need to follow five easy steps – which are:

1. Select the corrupted PDF file
2. Wait for it to be repaired
3. Select a name for the new PDF file that contains the recovered data
4. Select the version of the PDF file that contains the recovered data
5. Save the file.

Repair PDF files without software

OnlineFileRepair.com service

All you have to do is go to this link OnlineFileRepair.com/Repair directly, then upload the file to be repaired, enter the file name, your email address, and the image verification code, and the rest of the steps will be executed automatically. If the file is repaired successfully, you will be able to view a preview of the recovered document in addition to comparing its size with the original file size. You will need to pay $5 for a standard-sized file up to 100 megabytes, and you can check the prices on this page and after the payment is made, you will be directed to download the repaired file.

RecoveryToolBox service

All you have to do is go to this link PDF.RecoveryToolBox.com/online and select the file first, enter your email address, as well as the image verification code, and then follow the automatic steps. If the file is successfully recovered, the user will see screenshots of several pages of the file after repair and information about the number of pages that have been recovered in addition to the size of the source file and the recovered file. After that, you will need to pay $10 per gigabyte, and then you can download the file directly.